What its the most efficient geothermal energy solution available right now?

Answer by Kåre Lohse:

For individual houses:

Page on Digitalsolarheat

For communities:

Borehole Thermal Energy Storage: DLSC

They both have successful working projects of storing excess heat in the ground – two different methods, but basically the same:

Capturing heat from the sun when it's there, and saving it for later, whether 6 hours or 6 months later.

It's not a question of technology, it's a question of just doing it.

But (too) cheap energy from fossil fuel burning, combined with reluctance to change as well as lack of information available, is making the transition slow.

There are many others showing the way, like this blog about another individual, using geothermal storage to balance supply and demand over time:

Charging the Earth – Solar!: Introduction

View Answer on Quora

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CSL – John Kirby

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